【Identifying Equipment from Images】: The Heat Exchanger Tubes That \"Spit Out Gold Stars\"
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A heat exchanger was disassembled on site, and it was found that the heat exchange tubes were emitting sparks, which is clearly different from ordinary heat exchange tubes; see the image below. Here, let’s learn together with fellow enthusiasts: (1) What are those stars inside the heat exchange tubes? What is its function? (2) In what applications are these types of heat exchangers commonly used? The star-shaped internal finned heat exchange tube 1 increases the heat exchange area, thereby improving heat exchange efficiency. 2. Compared to other types of internal fins, it has lower air resistance and is often used in heat exchangers for gas cooling. The heat exchanger that was removed on site is the cooler of the air compressor.
Is it with internal fins? Is this more complicated to make?
Is the internal finned heat exchanger used for compressors?
This should be a vertical heat exchanger, maybe a falling film evaporator; these devices seem to function as liquid distributors
Heat exchange tube bundle filter plug plate, used in large-scale main lubricating oil heat exchangers or high-precision chemical reaction heat exchangers, as well as those that require high precision in heat exchange regulation.
Star-shaped internal fin heat exchangers: 1. The star-shaped fins effectively increase the heat exchange area; they present less air resistance compared to other types of internal fins, and can withstand higher pressures. 2. Suitable for cooling oil and dirty gas media
That small star is something like a flow perturber; it disturbs the fluid, reduces scaling, decreases the thickness of the boundary layer, and improves heat transfer efficiency； For such heat exchangers, you can use them anywhere if you want to improve the heat exchange efficiency.